Family sources say that Joe Jackson suffered a stroke Sunday morning.

It's being reported that Joe Jackson was brought to a São Paulo hospital this weekend after suffering a stroke. The 87-year-old, who is both the father and former talent manager of Michael and Janet Jackson, is said to have been suffering symptoms of blindness and dizziness, though it's not clear how long-term his ailments will be. He has been living with diabetes for some time.

Joe was celebrating his birthday in Brazil, but according to sources, he may be flown back to be treated in the U.S. -- depending on the results of tests he's currently undergoing.

No further information is known at the time. We will keep you updated with any details as they emerge.